Method and device for transmitting and receiving wireless signal in wireless communication system

A user equipment (UE) comprising:

• at least one radio frequency (RF) unit;
• at least one processor;
• and
• at least one computer memory operatively connected to the at least one processor and configured to cause the at least one processor to perform an operation when being executed, the operation comprising:
• receiving configuration information related to a channel state information reference signal (CSI-RS) resource set;
• receiving a downlink control channel including downlink control information,
• wherein the downlink control information including a CSI request field indicating a CSI triggering state;
• and
• receiving at least one aperiodic CSI-RS resource in the CSI-RS resource set related to the CSI triggering state,
• wherein, based on a subcarrier spacing (SCS) related to the at least one aperiodic CSI-RS resource being less than or equal to 120 kHz, the at least one aperiodic CSI-RS resource related to the CSI triggering state is received only within one slot of the CSI-RS resource set, and
• wherein, based on the SCS related to the at least one aperiodic CSI-RS resource being exceeding 120 kHz, the at least one aperiodic CSI-RS resource related to the CSI triggering state is received over a plurality of slots of the CSI-RS resource set.

A method comprising:

• transmitting, by a base station, BS, configuration information related to a channel state information reference signal (CSI-RS) resource set;
• transmitting, by the BS, a downlink control channel including downlink control information,
• wherein the downlink control information including a CSI request field indicating a CSI triggering state;
• and
• transmitting at least one aperiodic CSI-RS resource in the CSI-RS resource set related to the CSI triggering state,
• wherein, based on a subcarrier spacing (SCS) related to the at least one aperiodic CSI-RS resource being less than or equal to 120 kHz, the at least one aperiodic CSI-RS resource related to the CSI triggering state is received only within one slot of the CSI-RS resource set, and
• wherein, based on the SCS related to the at least one aperiodic CSI-RS resource being exceeding 120 kHz, the at least one aperiodic CSI-RS resource related to the CSI triggering state is received over a plurality of slots of the CSI-RS resource set.